GHOST CVE-2015-0235

GHOST: glibc gethostbyname buffer overflow

A buffer overflow in the __nss_hostname_digits_dots() function of the GNU C Library (glibc). This bug is reachable both locally and remotely via the gethostbyname*() functions and is a vulnerability for Linux systems.

There are a number of mitigating factors for the impact of this vulnerability

the limited amount of memory that can be overwritten by the attacker

it was fixed in 2013 as a non security bug (so not backported to older versions)